adjective

cautiously or suspiciously reluctant to do something.

she had been chary of telling the whole truth

wary,cautious,circumspect,heedful,careful,on one’s guard,guarded,mindful,watchful,distrustful,mistrustful,doubtful,sceptical,suspicious,dubious,hesitant,reluctant,disinclined,loath,averse,shy,nervous,apprehensive,uneasy,afraid,leery,cagey,iffy,on one’s toes